Piston ring



' April 21, 1925. 1,534,153

L. D. BAX

PISTON RING Filed June 9, 1924 xx tliiiiillr 5 I INVENTOR. I lllllllliZ L D Bax wmhwz A TTORNEY.

Patented Apr. 21, 1925.

UNITED STATES PATENT OFFICE.

LIONEL BAX, 01! DENVER}, COLORADO.

EISTON RING.

Application filed June 9,

To all whom it may concern:

Be it known that I, LIONEL D. BAX, a citizen of the United States, residing at Denver, in the county of Denver and State of Colorado, have invented certain new and useful Improvements in Piston Rings, of which the following is a specification. A

My invention relates to piston rings and its object is to provide a one-piece ring of very simple construction which in con-junction with the piston to which it is applied, provides an efiicient means for the distribution of oil over thewall of the cylinder with which the ring engages and for the return of surplus oil to the crank case of the 'en 'ine, during the upstroke of the piston.

My invention is particularly applicable to the lower rings used auxiliary to the compression rings at the upper end of the pie ton, and it comprises with the above object in view a, circular transversely split body of hardened steel which is beveled at the outer edge of its upper face to form a pocket in which a small quantity of the lubricant which entered the space above the ring during the down stroke of the'piston, is carried upwardly by its movement in the opposite direction and which at the lower edge of said beveled portion has a plurality of slanting apertures through which the surplus oil is caused to pass to the space of the piston groove back of the ring.

The piston to which the ring is applied is hollow and it has'in its circumferential wall ai plurality of openings through which the oil whiclr entered thepiston groove as hereinabove described, is drained to the crank I case of the engine below the piston.

in the several views of which like parts are similarly designated, and in which+ Figure]; represents a fragmentary sectionalelevation of a cylinder and a piston to which my improved ring is applied;

1924. Serial at. 718,866.

Figure 2, a partially sectional plan view of the ring;

Figure 3, a section taken on the line 33,

Figure 2; and

Figure 4, a section in the plane of that of Figure 1, showing the ring and the ad jacent parts of the piston and the cylinder wall drawn to an exaggerated scale.

Referring in detail to the drawings, 1 v

designates the jacketed cylinder /of an internal combustion engine, and 2 the hollow trunk piston which has a reciprocating movement therein.

The piston is equipped adjacent its upper of the lubricant which passed the ring during the down stroke of the piston, is carried upwardly by the up-stroke of the same,

as hereinbefore explained.

The surplus oil in the space above the ring passes to the space of the piston groove rearward of the same through elongated apertures 6 which slant from the lower edge of the beveled portion 5 downwardly to the inner circumferential surface of the ring,

and the oil which entered the piston groove.

is drained to the crank case through slant ing holes 10 at the bottom of the groove.

Having thus described my invention, what I claim and desire to secure by Letters Patent is:

1. The combination with an enginecylinder, of a piston having a ring-groove provided with openings for the drainage of oil, and a ring in the grooveflengaging the wall of the cylinder, the ring having at the outer edge of its face uppermost with relation to the compressionsstroke of the piston, a bevel which in conjunction with the cylinder wall, forms a pocket to carry a lubricant, and the ring having at the lower portion of said bevel, apertures for the pass sage of surplus lubricant to the space of the groove back of the ring. a

2; As a new article of manufacture, a pre- Q: 7 v t i V 534,153

' .ton ring having an 'upper face'ta. bevel it the outer edge of said face; and apertures the outer edge of said face, and apertures slanting downwardl from the lower porextending inwardly from the lower portion tion of the bevel to t e inner circumferential 10 of the bevel to the inner circumferential sursurface of the ring.

5 face of the ring. In testimony whereof I have afiixed my 3. As a new article of manufacture, a slgnature. 7 piston ring having an upper face, a bevel a t LIONEL D. BAX. 

